Adolph f



(No Model.)

A. F. PRAHM.

. LoooMoTIv-HBAD LIGHT. V No. 393,173. Patented Nov. 20, 1888.

,sf i Zz Witwen@ aww/Wto@ -rurn ADOLIII F. PRAHM, OF INDIANAPOLIS, INDIANA.

LOCONIOTIVE HEADSLIGHT.

SPECIFICATION forming part of Letters Patent No. 393,173l dated November 20, 1888.

Application filed April 17, 1888.

To all whom it may concern.:

Beit known that I, ADoLrH F. PRAHM, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Improvement in Locomotive Head-Lights, of which the following is a specification.

My invention relates to an improved means for obstructing or modifying the light from a locomotive head-light.

The object of my improvement is, first, to enable the engineer to draw a curtain partly or wholly across his headlight, either from his station in the cab or at the side of the headlight; second, to so arrange said curtain that it will be protected from injury either by the weather or heat from the lamps.

The accompanying drawings illustrate my invention. n

Figure l is a side elevation. Fig. 2 is an interior view, on a larger scale, of the front of the lantern, showing the curtain drawn partly across the opening. Fig. 3 is a transverse seetion at a, Fig. 2.

A is a curtain, of llexible material. One end of curtain A is mounted on a spring eurtain-roll, B, which may be of any well-known form.

C is a cylindrical case, having brackets d d at each end, by means of which it may be secured to one of the interior side walls of the lantern, and a narrow longitudinal slot, through which the curtain passes.

The spring curtainroll B is centrally mounted, so as to revolve within the case, and the curtain, when rolled thereon by the recoil of the spring, is contained in the annular space between the exterior of the roll and the interior of the case. The free edge of the curtain is secured to alight metallic rod,which is bent at a right angle to form a horizontal arm, e, and a vertical arm, f. Arm e projects out through a hollow stud, h, which is secured to the outside of the lantern and terminates in a knob, fi, and forms a guide-bar which controls the movement of the curtain, and arm f projects above the upper edge of the curtain into a grooved guide, j, secured tothe front of the lantern. Secured to arm f, and extending outward along arm e, is a cord, ift-,which passes out Serial No. 270,926. (No model.)

In operation, the engineer, desiring for any purpose to cover his head-light, as when on a side track, or desiring to use his headlight as a signal by partly covering it, may do so from his station in the cab by simply drawing the curtain the required distance across the glazed opening of the head-light by means of the cord k, the cord being made fast to hold the curtain extended; or the curtain may be drawn at the front of the engine by seizing knob i and drawing arm e outward and securing it in position by the set-screw S. IVhen the cord k is released, the curtain is rerolled on thel springroll by the recoil of the spring, in the usual well-known manner.

I ain aware that a curtain has before been used to cover a headlight on the outside, the curtain`roll being placed above the opening and adaptedto be operated from the front of the engine only, and I do notclairn such a device; but

I do claim as my inventionl. In a headlight, the combination of the lantern having a glazed opening, the curtain mounted on a spring-roller, the cylindrical case inclosing said curtain and spring-roller and secured to one side of the glazed opening within the lantern, the guide-bar secured to the free edge ofthe curtain and projecting through the side o1 the lantern, and the cord attached to the curtain and extending along said guidebar and out through suitable guides, all arranged to cooperate substantially as and for the purpose specified.

2. In a head-light, the combination,with the lantern having a glazed opening, of a curtain mounted on a spring-roller within the lantern on one side of the opening, a guide-bar attached to the free edge of the curtain and projecting through a hollow stud in the side of the lantern, and means, substantially as shown and described, for adjustably securing the guide-bar in position, all substantially as and for the purpose specified.

IOO

3. In a head-light, the lantern having a. tendingalongarm 6,a11e0n1bined and arranged glazed opening, the spring curtain-roller, the to (a0-operate substantially as specified. curtain mounted thereon, the cylindrical case surrounding the roller and the Curtain, the rod A ADOLPH F' PRAHM 5 bent to form arms e andf and secured t0 the Witnesses:

free edge of the curtain, and the cord also se- H. P. HOQD,

. cured to the free edge of the curtain and eX- V. M. HOOD. 

